CN207164231U - Residual current acting Characteristics Detection instrument calibration system based on LTE network - Google Patents
Residual current acting Characteristics Detection instrument calibration system based on LTE network Download PDFInfo
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- CN207164231U CN207164231U CN201720548106.4U CN201720548106U CN207164231U CN 207164231 U CN207164231 U CN 207164231U CN 201720548106 U CN201720548106 U CN 201720548106U CN 207164231 U CN207164231 U CN 207164231U
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- residual current
- detection instrument
- characteristics detection
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Abstract
A kind of residual current acting Characteristics Detection instrument calibration system based on LTE network, including database, remote control center and several residual current acting Characteristics Detection instrument calibrator (-ter) units, database is used for the calibration data for storing Devices to test, and remote control center passes through LTE radio frequency module wireless connection with residual current acting Characteristics Detection instrument calibrator (-ter) unit；The accurate transmission of residual current tester range is realized, substitutes traditional single index one by onechecking means, improves instrument calibration level and efficiency, while achievement in research provides practicable thinking to the intellectualized reconstruction of conventional metered dose testing equipment.
Description
Technical field
It the utility model is related to a kind of calibration system, especially a kind of residual current acting characteristic inspection based on LTE network
Survey instrument calibration system.
Background technology
The calibration means of the RCD acting characteristic detector of domestic and foreign current include substantially：Regulator
Device comparison method, leakage current jaw type tester comparison method etc..The above method mainly passes through alternating current ammeter, calibration resistor, number
Word universal meter, oscillograph etc. carry out single parameter index calibration, by manually reading measurement data, are reported by analysis on Uncertainty
Carry out empirical assessment.Aforesaid way, calibration process is complicated, and numerous uncertain factors influences be present, it is difficult to realizes high-precision
Degree, high quality control ability.
At present, measurement technology mechanism of different nature has the part detectability of RCD substantially,
It is relatively weak to the rated capacity of existing equipment, and market supply calibrator (-ter) unit is backward in technique, it is inconvenient for use, it is not right to form supply and demand
Claim situation.
The content of the invention
The purpose of this utility model be realize leakage switch detector in gauge check industry, tester for leakage protector,
The remote testing and calibration of the equipment such as RCD testers.
The technical solution of the utility model is：
A kind of residual current acting Characteristics Detection instrument calibration system based on LTE network, it is characterized in that it include database,
Remote control center and several residual current acting Characteristics Detection instrument calibrator (-ter) units, described database are used to store to be measured set
Standby calibration data, its signal input part connect the signal output part of remote control center, and described remote control center is with remaining
Aftercurrent acting characteristic detector calibrator (-ter) unit passes through LTE radio frequency module wireless connection.
Residual current acting Characteristics Detection instrument calibrator (-ter) unit of the present utility model include measurement interface, current sampling unit,
Switch, filtering and amplifying circuit, equipment main control processor, analog-digital converter, phaselocking frequency multiplier, touch liquid crystal display, LTE
Radio-frequency module and serial communication circuit；Described measurement interface is used to connect outside equipment to be calibrated, the connection of its signal output part
One signal input part of switch, its another signal input part are connected with the corresponding control signal output end of equipment main control processor,
The opening and closing time switched for controlling Devices to test input current, the signal output part of switch are sequentially connected current sample list
Member and filtering and amplifying circuit, two signal output parts of the filtering and amplifying circuit connect analog-digital converter and lock phase times respectively
The corresponding signal input part of frequency device, the signal output part of the analog-digital converter and phaselocking frequency multiplier are all connected with equipment master control
The corresponding signal end of processor, the output signal of foregoing phaselocking frequency multiplier is as analog signal sample frequency, the equipment master control
Processor is connected with serial communication circuit, LTE radio frequency module and touch liquid crystal display.
The signal output part of filtering and amplifying circuit of the present utility model connects an analogue quantity switch selector, described simulation
Amount switching selector is used for the range for automatically adjusting corresponding Devices to test, and its two signal output part connects Analog-digital Converter respectively
The corresponding signal input part of device and phaselocking frequency multiplier.
Integrated circuit of the present utility model is designed using delamination modularization.
Integrated circuit of the present utility model also includes energy-storage units, is worked for portable outfield.
Current sampling unit of the present utility model uses high speed sampling circuit, for improving the speed of storage.
Equipment main control processor output end of the present utility model connects a signal lamp, for display device work shape
State.
The beneficial effects of the utility model：It is wireless based on LTE mobile network datas that the utility model realizes calibration system
Mode of operation is transmitted, the real-time transmitting-receiving of remote testing data is realized, is easy to distal end to automatically generate the function of electronical record form,
Achievement in research provides practicable thinking to the intellectualized reconstruction of conventional metered dose testing equipment simultaneously.
Brief description of the drawings
Fig. 1 is equipment block diagram of the present utility model.
Embodiment
The utility model is further described with reference to the accompanying drawings and examples.
A kind of residual current acting Characteristics Detection instrument calibration system based on LTE network, it includes database, remote control
Center and several residual current acting Characteristics Detection instrument calibrator (-ter) units, described database are used for the calibration for storing Devices to test
Data, its signal input part connect the signal output part of remote control center, and described remote control center moves with residual current
Make Characteristics Detection instrument calibrator (-ter) unit and pass through LTE radio frequency module wireless connection.
Residual current acting Characteristics Detection instrument calibrator (-ter) unit of the present utility model include measurement interface, current sampling unit,
Switch, filtering and amplifying circuit, equipment main control processor, analog-digital converter, phaselocking frequency multiplier, touch liquid crystal display, LTE
Radio-frequency module and serial communication circuit；Described measurement interface is used to connect outside equipment to be calibrated, the connection of its signal output part
One signal input part of switch；The input current switched for cutting off Devices to test, its another signal input part and equipment
The corresponding control signal output end of main control processor is connected, and the signal output part of switch is sequentially connected current sampling unit and amplification
Filter circuit, two signal output parts of the filtering and amplifying circuit connect pair of analog-digital converter and phaselocking frequency multiplier respectively
Induction signal input, analog-digital converter are used to sampled signal being converted to digital output to equipment main control processor, lock
Phase frequency multiplier is used to carry out 50HZ AC signals phase locking frequency multiplying, and the signal after frequency multiplication samples as analog signal to be used, described
Equipment main control processor is connected with analog-digital converter, serial communication circuit, LTE radio frequency module and touch liquid crystal display.
The signal output part of filtering and amplifying circuit of the present utility model connects an analogue quantity switch selector, described simulation
Amount switching selector is used for the range for automatically adjusting corresponding Devices to test, and its two signal output part connects Analog-digital Converter respectively
The corresponding signal input part of device and phaselocking frequency multiplier.
Integrated circuit of the present utility model is designed using delamination modularization.
Integrated circuit of the present utility model also includes energy-storage units, is worked for portable outfield.
Current sampling unit of the present utility model uses high speed sampling circuit, for improving the depth of storage.
Equipment main control processor output end of the present utility model connects a signal lamp, for display device work shape
State.
The utility model is not directed to partly same as the prior art or can realized using prior art.
Claims (7)
1. a kind of residual current acting Characteristics Detection instrument calibration system based on LTE network, it is characterized in that it includes database, remote
Process control center and several residual current acting Characteristics Detection instrument calibrator (-ter) units, described database are used to store Devices to test
Calibration data, its signal input part connects the signal output part of remote control center, described remote control center with it is remaining
Electric current acting characteristic detector calibrator (-ter) unit passes through LTE radio frequency module wireless connection.
2. a kind of residual current acting Characteristics Detection instrument calibration system based on LTE network according to claim 1, it is special
Sign is that described residual current acting Characteristics Detection instrument calibrator (-ter) unit includes measurement interface, current sampling unit, switch, amplification filter
Wave circuit, equipment main control processor, analog-digital converter, phaselocking frequency multiplier, touch liquid crystal display, LTE radio frequency module and
Serial communication circuit；Described measurement interface is used to connect outside equipment to be calibrated, a letter of its signal output part connecting valve
Number input, its another signal input part are connected with the corresponding control signal output end of equipment main control processor, and the switch is used
In the opening and closing time of control Devices to test input current, the signal output part of switch is sequentially connected current sampling unit and amplification is filtered
Wave circuit, two signal output parts of the filtering and amplifying circuit connect the correspondence of analog-digital converter and phaselocking frequency multiplier respectively
Signal input part, the signal output part of the analog-digital converter and phaselocking frequency multiplier are all connected with pair of equipment main control processor
Induction signal end, the output signal of foregoing phaselocking frequency multiplier is as analog signal sample frequency, the equipment main control processor and string
Port communications circuit, LTE radio frequency module connect with touch liquid crystal display.
3. a kind of residual current acting Characteristics Detection instrument calibration system based on LTE network according to claim 2, it is special
Sign is that the signal output part of described filtering and amplifying circuit connects an analogue quantity switch selector, the choosing of described analogue quantity switch
The range that device is used to automatically adjust corresponding Devices to test is selected, its two signal output part connects analog-digital converter and lock phase respectively
The corresponding signal input part of frequency multiplier.
4. a kind of residual current acting Characteristics Detection instrument calibration system based on LTE network according to claim 2, it is special
Sign is that the equipment is designed using delamination modularization.
5. a kind of residual current acting Characteristics Detection instrument calibration system based on LTE network according to claim 2, it is special
Sign is that the equipment also includes energy-storage units, is worked for portable outfield.
6. a kind of residual current acting Characteristics Detection instrument calibration system based on LTE network according to claim 2, it is special
Sign is that described current sampling unit uses high speed sampling circuit, for improving the speed of storage.
7. a kind of residual current acting Characteristics Detection instrument calibration system based on LTE network according to claim 2, it is special
Sign is that described equipment main control processor output end connects a signal lamp, for display device working condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720548106.4U CN207164231U (en) | 2017-05-17 | 2017-05-17 | Residual current acting Characteristics Detection instrument calibration system based on LTE network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720548106.4U CN207164231U (en) | 2017-05-17 | 2017-05-17 | Residual current acting Characteristics Detection instrument calibration system based on LTE network |
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| CN207164231U true CN207164231U (en) | 2018-03-30 |
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| CN201720548106.4U Active CN207164231U (en) | 2017-05-17 | 2017-05-17 | Residual current acting Characteristics Detection instrument calibration system based on LTE network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780250A (en) * | 2019-09-30 | 2020-02-11 | 国创新能源汽车能源与信息创新中心(江苏)有限公司 | Automatic calibration system and method for residual current detection |
-
2017
- 2017-05-17 CN CN201720548106.4U patent/CN207164231U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780250A (en) * | 2019-09-30 | 2020-02-11 | 国创新能源汽车能源与信息创新中心(江苏)有限公司 | Automatic calibration system and method for residual current detection |
| CN110780250B (en) * | 2019-09-30 | 2021-11-09 | 国创移动能源创新中心(江苏)有限公司 | Automatic calibration system and method for residual current detection |
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